JPH0446483Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

The present invention relates to an outrigger of a walking type deep cultivation device for deeply cultivating between fruit trees in orchards, between perennial crops, etc., for example.

[Conventional technology]

The applicant first installed a linear spiral cutting blade that rotates at a substantially predetermined pitch along an imaginary cylinder on a vertical rotating shaft, and rotated the rotating shaft in the normal direction to rotate the spiral cutting blade. In a deep cultivating device that excavates a spiral digging blade that has entered the soil by digging into the soil or reversing the rotation axis, when the spiral digging blade is dug into the soil, the soil along with the surrounding soil is removed. A riding-type device is proposed that is equipped with a lifting mechanism that lifts up a spiral digging blade to dig a hole, or lowers the lifted spiral digging blade.

[Problem that the invention attempts to solve]

By the way, the above-mentioned conventional deep plowing device can be used as is if it is attached to, for example, a four-wheeled tractor that has a three-point link hitch mechanism that moves up and down by a hydraulic mechanism, but if you try to use it by attaching it to a walk-behind tractor, Since it does not have a lifting mechanism like the three-point link hitch mechanism, there was a problem that it could not be used as is.

[Means to solve the problem]

Therefore, in order to enable the above-mentioned deep plowing device to be attached to a walk-behind tractor for use, the present invention is equipped with a prime mover, a control handle that extends diagonally to the rear of the machine, and at least one pair of running drive wheels on the left and right sides. A deep cultivation device is attached to the front or rear part of the main body having an auxiliary wheel at its tip and moves a vertically extending linear spiral digging blade in the vertical direction while rotating in the horizontal direction, The device is characterized in that an outrigger is provided at the end of the main body opposite to the auxiliary wheels, which is movable between a use position where it touches the ground by stepping on the foot and a non-use position where it is lifted up to the main body side. .

[Effect]

With this configuration, the walk-behind deep cultivating device of the present invention can be installed on a two-wheeled vehicle body such as a walk-behind tractor and used in locations where large four-wheeled vehicles such as passenger tractors cannot enter. The device can be introduced to perform deep plowing work even under certain conditions, and even though it is a walking type, the deep plowing device can be supported by auxiliary wheels, traveling drive wheels, and outriggers to perform stable deep plowing work.

【Example】

In Fig. 1, numeral 1 is a walk-behind tractor;
A main body 2 of the tractor 1 is equipped with a pair of left and right driving wheels 3, an engine 4 is mounted on the main body 2, and a steering handle 5 is provided. The drive running wheels 3 are configured to receive power transmitted from an engine 4 and changed in speed by a transmission 6 for driving and running. A front hit 7 and a rear hit 8 are provided at the front end and rear end of the main body 2, and the front hit 7
A deep cultivation device 9, which will be described later, is attached to the rear hitch 8.
A rear frame 10 having an L-shape in side view is attached to the rear frame 10. A hydraulic pump 11 is mounted on a horizontal portion of the rear frame 10, and power is transmitted from the engine 4. At the upper end of the rear frame 10,
A hydraulic operating section 12 located below the steering handle 5
Further, a base end portion of an outrigger 13 is pivotally supported at the lower part of the rear frame 10 so as to be movable up and down. The outrigger 13 is
As shown in the figure, the outrigger 13 is biased in the upward return direction by a spring 14, and when the outrigger 13 is pressed down to the ground state, the rear end of the rear frame 10 is biased by the spring 15. A locking arm 17 that engages with a serrated engagement protrusion 16 is provided, and an engagement release pedal 18 is also provided. On the other hand, the deep cultivating device 9 connected to the front hitch 7 has an auxiliary wheel 20 at the tip of a front frame 19 that is L-shaped in side view and supports the front frame 19. A front elevator tube 21 and a rear elevator tube 22 are supported. Between the front lifting cylinder 21 and the rear lifting cylinder 22, a linear spiral cutting blade 24 rotatable in both forward and reverse directions by a hydraulic motor 23 is supported via a support frame 25. The front part of the support frame 25 is fitted into the front elevating cylinder 21 so as to be able to rise and fall freely, and the rear part is connected to the elevating chain 27 that rotates in forward and backward directions endlessly by a hydraulic motor 26 to allow the rear elevating cylinder 22 to rise and fall. It is becoming more and more common. Further, a support roll 28 and a guide roll 29 are provided at the tip of the spiral digging blade 24.
The operation of entering the soil in step 4 is made to be carried out smoothly. In a walking type deep cultivation device with such a configuration,
When introducing into orchards or perennial crop fields where deep tillage is required, the walk-behind tractor 1 is equipped with a deep tillage device 9 and is equipped with auxiliary wheels 20, so it can be easily moved to work in narrow spaces. It can be carried out. When performing deep plowing work, the tip of the spiral digging blade 24 is opposed to the position where deep plowing is to be performed, the walk-behind tractor 1 stops walking, and the outriggers 13 are lowered by stepping on them with the foot, as shown in FIG. When grounded, the locking arm 17 stably supports the rear part of the walk-behind tractor 1 while being engaged with the engagement protrusion 16. When the hydraulic motor 23 is rotated in this state, the spiral digging blade 24 penetrates into the soil by its own turning digging force, and digs deep into the soil while moving the lifting chain 27. When the spiral digging blade 24 penetrates to a predetermined depth, the hydraulic motor 23
By stopping the rotation and reversing the rotation of the motor 23, the spiral digging blade 24 is extracted from the field and the desired deep plowing work is performed. Further, as shown in FIG. 5, when the outrigger 13 is released from the grounded state (used state), the engagement with the engagement protrusion 16 of the locking arm 17 is released by depressing the engagement release pedal 18. Outrigger 13
The spring 14 returns to the non-use position by the elastic force of the spring 14. In the above embodiments, the deep cultivation device is attached to the front of the walking tractor, but it may be attached to the rear of the tractor.

[Effect of the idea]

As explained above, according to the outrigger of the walking-type deep-cultivation device of the present invention, the deep-cultivation device, which has an auxiliary wheel at the tip and is equipped with a spiral digging blade, is attached to the main body of a traveling vehicle such as a walking-type tractor. Since the outriggers are provided on the main body on the opposite side of the auxiliary wheels so as to be movable up and down, it can be introduced into any place where a small vehicle body such as a small tractor can travel, and deep plowing work can be easily performed. Furthermore, the deep plowing device is stably supported by at least two drive wheels, auxiliary wheels, and outriggers, so that the desired deep plowing work can be performed stably, and the outriggers can be operated very easily.

[Brief explanation of drawings]

Fig. 1 is a side view of the entire walk-behind deep cultivation device showing one embodiment of the present invention, Fig. 2 is a side view of the main parts, Fig. 3 is a plan view of the main parts, and Figs. 4 and 5 are the working It is an explanatory diagram. DESCRIPTION OF SYMBOLS 1... Walking tractor, 2... Vehicle body, 3... Driving wheel, 4... Engine, 5... Steering handle, 6... Mission, 7... Front hitch, 8...
... Rear hitch, 9 ... Deep cultivation device, 10 ... Rear frame, 11 ... Hydraulic pump, 12 ... Hydraulic operation section, 13 ... Outrigger, 14, 15 ... Spring,
16... Engaging protrusion, 17... Locking arm, 18...
...Disengagement pedal, 19...Front frame, 20
...Auxiliary wheel, 21...Front lifting tube, 22...Rear lifting tube, 23, 26...Hydraulic motor, 24...
Spiral digging blade, 25... Support frame, 27... Lifting chain, 28... Support roll, 29... Guide roll.

Claims (1)

[Scope of utility model registration request] The main body is equipped with a prime mover, has a control handle extending diagonally to the rear of the aircraft, and at least a pair of left and right traveling drive wheels, and has an auxiliary wheel at the tip of the main body, and has a linear shape extending vertically. A deep cultivation device is installed that moves the spiral digging blade in the vertical direction while rotating it in the horizontal direction, and the end of the main body opposite to the auxiliary wheels has a use position where it touches the ground by foot operation, and a An outrigger for a walking type deep cultivation device, characterized in that a movable outrigger is provided at a lifted and unused position.